iOS Swift Collections and Control Flow Control Flow With Conditional Statements Working With Logical Operators

I am really confused! Please help!

Task: For this challenge, we'd like to know in a range of values from 1 to 100, how many numbers are both odd, and a multiple of 7.

To start us off, I've written a for loop to iterate over the desired range of values and named the local constant n. Your job is to write an if statement inside the for loop to carry out the desired checks.

If the number is both an odd number and a multiple of 7, append the value to the results array provided.

Hint: To check for an odd number use the not operator to check for "not even"

operators.swift
var results: [Int] = []

for n in 1...100 {
        if(n % 2 != 0 && if n % 7 == 0) {
            results.append 
    }
}

2 Answers

Jerson Otzoy
Jerson Otzoy
1,531 Points

Hello,

You are close, you don't have to write if again in the condition, the && operator is enough, also you need to append the values that meet the conditions

if(n % 2 != 0 && n % 7 == 0) {
            results.append(n)
    }
joe Bell Fenner
PRO
joe Bell Fenner
Pro Student 2,646 Points

Hi Jerson I got Fairly close but I didn’t use parentheses now I’m kicking myself. Can you tell me why do we you them for this challenge? Don’t quite understand.